9 - 14 VM600 networking manual MAVM600-NET/E
Edition 9 - February 2018
MPC4 card
SETTING UP A MODBUS CONNECTION (CPUM SW VERSION 071 OR LATER)
NOTE: Bits b6 to b15 are not accessible using Modbus functions 01 or 02.
Discrete values are not available individually. For example, you cannot request only bit b3,
that is, all eight bits have to be requested.
9.4.3 Card status
CPUM cards running firmware version 071 or later provide status information for the MPC4
card. Three 16-bit status registers have been mapped to access the card status.
9.4.3.1 Status register 1 – basic and advanced functions
The basis functions (BF) and advanced functions (AF) available are as shown in Table 9-12.
Additional available status added to this register:
b6 SOL No speed out of limit error Speed out of limit error
b7 ERR No error Error
b8 to
b15
Not used
Table 9-11: Mapping of discrete values for the MPC4 speed channel status register
Bit Status Meaning when not set (0) Meaning when set (1)
Table 9-12: Mapping of card status register 1
Bit Status Meaning when not set (0) Meaning when set (1)
b0 BF1 Basic function 1 not active Basic function 1 active
b1 BF2 Basic function 2 not active Basic function 2 active
b2 BF3 Basic function 3 not active Basic function 3 active
b3 BF4 Basic function 4 not active Basic function 4 active
b4 BF5 Basic function 5 not active Basic function 5 active
b5 BF6 Basic function 6 not active Basic function 6 active
b6 BF7 Basic function 7 not active Basic function 7 active
b7 BF8 Basic function 8 not active Basic function 8 active
b8 AF1 Advanced function 1 not active Advanced function 1 active
b9 AF2 Advanced function 2 not active Advanced function 2 active
b10 AF3 Advanced function 3 not active Advanced function 3 active
b11 AF4 Advanced function 4 not active Advanced function 4 active
b12 to
b15
Not used
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